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With the progress of human society, the Internet of things technology, cloud computing, chain blocks, big data and other advanced technology to all aspects of the human society has brought a proud forte changes, in order to realize the wisdom of the agricultural production status, unmanned management, agricultural wireless monitoring system based on wireless sensor network technology research will be from the routing protocol of wireless monitoring system algorithm and the node localization algorithm two aspects carries on the discussion.In the aspect of routing protocol algorithm, a topology control algorithm based on quadrilateral grid clustering is proposed, and the network topology, node death and energy consumption are compared with the LEACH algorithm. From the simulation results, it can be seen that the algorithm based on quadrilateral network clustering has better performance than the LEACH algorithm.Temporary anchor node localization algorithm based on node localization algorithm, step by step from different node to node localization algorithm of neighbor nodes and node error comparing two aspects, the results of the comparison of simulation indicate that farmland area is 1000 m * 1000 m, the anchor nodes to 50, the number of sensors is 200, network connectivity, the largest node positioning error minimum, build a wireless monitoring system for farmland, greenhouses and agricultural USES.